Abstract
Behavior of hydrogen in an austenitic stainless steel SUS316L was investigated by tritium transmission electron microscopic autoradiography exposed at liquid nitrogen temperature. In this case, the size of blackened silver particles was about 0.04 μm, that was one third of the particles size when exposed at 253 K.Blackened silver particles at liquid nitrogen temperature were observed at precipitates of the grain boundaries, in the vicinity of triple points, along coherent twin boundary, at facet corners of twins, dislocations and interfaces between precipitates and the matrix phase.
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